Pith Number

pith:QQLF744J

pith:2000:QQLF744JLIEPJWLA5R65I3M7GA

not attested not anchored not stored refs pending

BeppoSAX observations of Narrow-Line Seyfert 1 galaxies: II. Ionized iron features in Arakelian 564

A.Comastri, A. Siemiginowska, C. Vignali, E.M. Puchnarewicz, F. Fiore, F. Nicastro, G. Matt, G.M. Stirpe, K.M. Leighly, M. Guainazzi, W.N. Brandt

arxiv:astro-ph/0010476 v1 · 2000-10-24 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQLF744JLIEPJWLA5R65I3M7GA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T16:17:27.268896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84165ff3895a08f4d960ec7dd46d9f3036a473352bd54132ac53a32625137d75

Aliases

arxiv: astro-ph/0010476 · arxiv_version: astro-ph/0010476v1 · doi: 10.48550/arxiv.astro-ph/0010476 · pith_short_12: QQLF744JLIEP · pith_short_16: QQLF744JLIEPJWLA · pith_short_8: QQLF744J

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QQLF744JLIEPJWLA5R65I3M7GA \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 84165ff3895a08f4d960ec7dd46d9f3036a473352bd54132ac53a32625137d75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8040068899605397f780e973542425a00c54250a040db75795f48d1d3bdf4c9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-10-24T11:29:30Z",
    "title_canon_sha256": "17e4eabee33b254ba48a62905c4e9d75584cf8c7a73a2b078d02ad038cf2648e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0010476",
    "kind": "arxiv",
    "version": 1
  }
}